Exacum

Exacum  is a genus of plant in family Gentianaceae. It contains the following species (but this list is incomplete):
 * Exacum affine Balf.f. ex Regel
 * Exacum axillare
 * Exacum bicolor
 * Exacum caeruleum Balf.f.
 * Exacum laxiflorum (Gamble) Geethakumary, Deepu, Kissling & Pandurangan
 * Exacum pallidum
 * Exacum pedunculatum
 * Exacum sessile
 * Exacum socotranum Balf.f.
 * Exacum tetragonum
 * Exacum travancoricum
 * Exacum trinervium
 * Exacum walkeri